WaE: C4702: unreachable code

regression from...

commit 31bc9a22
Date:   Sat Jan 9 03:09:49 2016 +0530

    tdf#96888 Kill internal vcl dog-tags ...

Change-Id: I3fb375701cd1f8d8d0ea7f8a22b727881eaf90eb

vcl/source/window/menu.cxx

@@ -3138,9 +3138,7 @@ sal_uInt16 PopupMenu::ImplExecute( const VclPtr<vcl::Window>& pW, const Rectangl
         if( ! pW->IsDisposed() )
             pW->ImplDecModalCount();
 
-        if ( !pWin->IsDisposed() )
-            return 0;
-        else
+        if ( pWin->IsDisposed() )
             return 0;
 
         // Restore focus (could already have been